Operations turned off the MI low level RF system at 10:03 AM so an expert could load a new code to drive the RF stations.

TeV experts began preparing at 10:09 AM to adjust the interaction points at CDF and D0.

At 11:01 AM, Operations reported that the MIRF system did not work with the new code. The expert began reverting back to the old code. Using the old code, the system was back up by 11:13 AM, but some problems continued.

Pbar studies ended at 11:17 AM and Pbar resumed stacking.

D0 experts reported at 11:48 AM that their new interaction point was “spot on.” However, CDF reported that its new interaction point was better than its old one, but was still not good.

At noon, Operations reported that the MIRF system still wasn’t working. An expert rebooted the MI dampers (I34 dampers) and within 10 minutes everything was back to normal.

Operations reported at 12:59 PM that they had terminated store 5668.

At 1:47 PM, KRF3 tripped off on a coil comparator fault. It reset.

A SY expert reported at 3:29 PM that he had established beam to MT6 and was done with his tuning and done with the beam.

Operations reported at 4 PM that the Recycler had stashed antiprotons once during the day shift.

Operations reported at midnight that the Recycler had stashed once during the evening shift.

Friday November 2

The midnight shift began with the TeV in shot setup, with Operations monitoring the stash (102.4E10), with Pbar stacking (17.7E10), and with Sci /MiniBooNE taking beam.

Operations established store 5677 at 12:14 AM with an initial luminosity of 46.26E30.

At 12:28 AM, KRF2 tripped off on a coil comparator fault for the first of six times in 45 minutes. It reset.

At 1:16 AM, Operations reported a tripped yard breaker at the TeV sector F23 service building. The Duty Electrician reset the yard breaker. Operators discovered that the M:V105 power supply had tripped off on a ground fault indication. A power supply expert contacted the operators at F23 and they managed to get the power supply on. Pbar resumed stacking at 2:05 AM.

At 2:19 AM, the Pbar lithium lens tripped off for the first of three times over the next two hours due to an external interlock power supply over voltage indication. Operators reset the lens after each trip.

At 2:45 AM, Operations reported that they had been having more problems with KRF2 and that it had been causing beam position problems in Booster. Operations made some adjustments and talked with an expert who said that the coil power supply would have to be changed out in the morning.

At 3:39 AM, the 750 KeV buncher tripped off. It reset.

Operations reported at 7:55 AM that the Recycler had stashed once during the midnight shift.

The Plans for Friday and the Weekend

The plans for today are to put the TeV into shot setup as soon as the TeV experts complete their studies. The Run Coordinator will make time for the KRF2 coil power supply change and will allow Pbar to conduct a cooling study. Next week there will be a 12 hour or more shutdown to move the low beta magnets at CDF in order to adjust their interaction point and to help the TeV orbit and helix.